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TIS PV1: Your Essential Solar Irradiance Meter

The TIS PV1 Solar Power Meter provides accurate measurements of solar power, making it an indispensable tool for solar professionals and energy auditors. Whether you're determining the optimal angle for solar panels, assessing the performance of solar window film, or simply measuring solar radiation, the TIS PV1 delivers clear, reliable results.

Key Measurement Applications

As outlined on the Test Instrument Solutions website and in the product manual, the TIS PV1 is perfect for a range of solar measurements:

  • Solar Panel Optimisation: Determine the optimal incident angle to maximise energy capture from your PV panels.
  • Solar Radiation Measurement: Quantify the amount of solar power reaching a specific location.
  • Transmission Measurement: Easily assess the effectiveness of solar film on windows by comparing readings taken through the glass versus direct sunlight. This helps understand potential energy savings and the impact on different energy tariffs.
  • Car Window Intensity: Measure light intensity through vehicle windows.

User-Friendly Features

Designed for convenience and accuracy:

  • Selectable Units: Choose between W/m² (up to 1999) or BTU/(ft²*h) (up to 634).
  • Clear Display: A 3 ¾ digit LCD provides easy-to-read measurements.
  • Simple Operation: No complex adjustments needed; data is displayed clearly. The manual confirms its straightforward use.
  • Data Hold: Freeze the current reading on the display for easy recording.
  • Zero Function: Allows for zero adjustment for precise readings.
  • Auto Ranging: Simplifies operation across its measurement range.
  • Stable Readings: Provides consistent measurements suitable for long-term use, according to its features list.

Why Evergy Recommends This Product

The TIS PV1 is a practical and affordable tool for anyone working with solar energy. Its simplicity makes it easy to get quick, actionable data.

  • Essential for Installers: Helps ensure panels and mounting systems are positioned for maximum output.
  • Useful for Auditors: Quantify solar gain and assess the impact of window films.
  • Reliable & Convenient: Compact, easy to use, and provides stable readings.

Technical Highlights

Based on the product manual and website specifications:

  • Range: 0 - 1999 W/m² or 0 - 634 BTU/(ft²*h)
  • Resolution: 0.1 W/m² or 0.1 BTU/(ft²*h)
  • Accuracy: Typically ±10W/m² or ±5%, whichever is greater in sunlight.
  • Sampling Time: Approx. 0.25 seconds

Please consult the datasheet tab for full specifications.

What's Included?

The product manual lists the following accessories:

  • TIS PV1 Solar Power Meter
  • User Manual
  • 2 x 1.5V AAA Batteries
  • Carrying Case

Optimise Your Solar Potential

Take the guesswork out of solar measurements. The TIS PV1 provides the data you need for effective solar panel installations and energy assessments. Check out our range of solar inverters and solar batteries to build a complete system. Need help? Get in touch.

No data sheets or downloads available for this product.

Delivery options

  • Standard parcel delivery — tracked courier, typically 1–2 working days to UK mainland. Ideal for chargers, accessories and smaller solar components.
  • Pallet delivery — for bulkier items such as multi‑panel solar kits or commercial chargers. Typically 2–3 working days, kerbside as standard; 24/48‑hour services on request.
  • Collection — collect from our Oxfordshire distribution hub by appointment. Please contact us before travelling so we can confirm stock is ready.

Lead times

We dispatch Monday to Friday (excluding bank holidays). Stocked items ordered before our warehouse cut‑off are dispatched same day where services allow. Back‑order items are clearly flagged with estimated lead times. Exact services and pricing are confirmed at checkout.

Delivery area

UK mainland addresses only. We are unable to ship to Northern Ireland, Republic of Ireland, Isle of Wight, Isle of Man or the Channel Islands. Please report any damages or shortages within 48 hours of delivery.

Read full delivery & returns details

Trade customer?

Open online pricing is available, but if you need account support, branch collection, project quantities or renewables supply help, start a trade conversation with LAMPS.

Trusted by LAMPS customers

5.0 out of 5 66+ customer reviews

"I recently ordered a SolarEdge Home Wave SE3680 inverter and compatible wifi antenna to replace a faulty older inverter. Good price, quick delivery and excellent customer service."

"Excellent support when choosing solar inverters and ancillaries. LAMPS made it easy to get the right kit delivered to site on time."

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